TC7660SCOA723 データシートの表示（PDF） - Microchip Technology

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TC7660SCOA723

Super Charge Pump DC-to-DC Voltage Converter

Microchip Technology 

TC7660S

Super Charge Pump DC-to-DC Voltage Converter

Features

• Oscillator boost from 10 kHz to 45 kHz

• Converts +5V Logic Supply to ±5V System

• Wide Input Voltage Range: +1.5V to +12V

• Efficient Voltage Conversion (99.9%, typical)

• Excellent Power Efficiency (98%, typical)

• Low PowerConsumption:80 µA(typical)@VIN=5V

• Low Cost and Easy to Use

- Only Two External Capacitors Required

• Available in 8-Pin Small Outline (SOIC) and 8-Pin

PDIP Packages

• Improved ESD Protection (10 kV HBM)

• No External Diode Required for High-Voltage

Operation

Applications

• RS-232 Negative Power Supply

• Simple Conversion of +5V to ±5V Supplies

• Voltage Multiplication VOUT = ± n V+

• Negative Supplies for Data Acquisition Systems

and Instrumentation

Package Types

PDIP/SOIC

BOOST 1

CAP+ 2

GND 3

CAP- 4

TC7660S

8 V+

7 OSC

6

LOW

VOLTAGE (LV)

5 VOUT

General Description

The TC7660S device is a pin-compatible replacement

for the industry standard 7660 charge pump voltage

converter. It converts a +1.5V to +12V input to a corre-

sponding -1.5V to -12V output using only two low-cost

capacitors, eliminating inductors and their associated

cost, size and electromagnetic interference (EMI).

Added features include an extended supply range to

12V, and a frequency boost pin for higher operating fre-

quency, allowing the use of smaller external capacitors.

The on-board oscillator operates at a nominal fre-

quency of 10 kHz. Frequency is increased to 45 kHz

when pin 1 is connected to V+. Operation below 10 kHz

(for lower supply current applications) is possible by

connecting an external capacitor from OSC to ground

(with pin 1 open).

The TC7660S is available in 8-Pin PDIP and 8-Pin

Small Outline (SOIC) packages in commercial and

extended temperature ranges.

 2001-2015 Microchip Technology Inc.

DS20001467C-page 1

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